51 to 75 of 137 Permanent API Design Jobs

Solutions Architect

Hiring Organisation
Method-Resourcing
Location
St. Albans, Hertfordshire, South East, United Kingdom
Employment Type
Permanent
Salary
£95,000
Solutions Architect (Integration | API Design) St Albans (Hybrid) Compensation: £95,000 +Bonus +Equity Method Resourcing are proud to be partnering with a fast-growing, international technology business delivering critical services across multiple high-reliability sectors. They're seeking a Solutions Architect to lead the end-to-end technical … design of mission-critical platforms and services. The Role: We're seeking an experienced Solution Architect to design scalable, secure, and efficient technology solutions that support a major systems consolidation and migration programme. You will be responsible for planning and documenting the decommissioning of up to 30 disparate ...

Senior Mobile Engineer - React Native

Hiring Organisation
Onsera Health
Location
London Area, United Kingdom
APIs that transform patient data into actionable health recommendations. This role offers the opportunity to shape the full mobile experience while collaborating with product, design, and clinical teams to deliver features that meaningfully improve patient outcomes. What You'll Do Build and ship features for iOS and Android mobile … Connect, enabling seamless data synchronization from digital scales, blood pressure cuffs, activity trackers, and continuous glucose monitors (CGMs) Partner with machine learning engineers to design and implement client-side integrations with internal AI APIs for data analysis, personalization, and clinical decision support Drive end-to-end feature delivery ...

Generative AI Engineer

Hiring Organisation
SearchWorks
Location
Greater London, England, United Kingdom
Experience building and deploying LLM-powered applications in production Proficiency in front-end development with React, TypeScript, and modern web technologies Understanding of RESTful API design, microservices architecture, and cloud infrastructure Experience with prompt engineering, RAG systems Strong foundation in ML fundamentals including NLP, time-series analysis ...

Senior GoLang Developer

Hiring Organisation
Orangepeople LLC
Location
Texas, United States
Employment Type
Permanent
Salary
USD Annual
specifically giving/receiving constructive feedback in a collaborative setting. Minimum of 4 years of programming experience (ie, Golang, Python). Strong understanding of API design and implementation, including security practices. Ability to learn new technology quickly and adapt to changes. Experience with both AWS & Azure cloud environments. ...

Senior AI Engineer

Hiring Organisation
Chambers and Partners
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
Competitive salary
drive smarter decisions and greater efficiency across Chambers and Partners. In this brand new role, role, as part of our Data team, you’ll design and implement intelligent systems that enhance how we use data, streamline operations, and power innovation across our digital platforms. You’ll play … Main Duties and Responsibilities Data & Retrieval Build robust ingestion pipelines for PDFs/Word/Excel/Audio/JSON and semi-structured sources. Design RAG systems: chunking strategies, document schemas, metadata, hybrid/dense retrieval, re-ranking, and grounding. Manage vector/keyword indexes (e.g., Azure AI Search ...

Lead Developer

Hiring Organisation
ITSS Recruitment
Location
Wokingham, Berkshire, United Kingdom
Employment Type
Permanent
Salary
£55000 - £65000/annum Benefits
Django, Node.js). · Proven leadership experience in small teams or solo development. · Comprehensive AWS DevOps skills: CI/CD, Terraform/CloudFormation, scalable infrastructure design, and AWS security best practices. · Monitoring, logging, and alerting (CloudWatch mastery) to ensure top performance. · Backup, disaster recovery, and business continuity planning experience. · RESTful … API design & integration. · Git (GitHub/Bitbucket). · Modern, scalable CSS (SASS, CSS Modules). · Database experience (MySQL via AWS RDS). · Mobile development exposure (React Native, iOS/Android) a bonus. · Willingness to travel to the UK (including an extended onboarding period). · Excellent communicator, proactive problem ...

Software Developer

Hiring Organisation
EBITS LLP
Location
Henley-on-Thames, Oxfordshire, England, United Kingdom
Employment Type
Full-Time
Salary
£35,000 - £40,000 per annum
Level: 3-6 years of experience in software development Stack: C#, .Net Core, ASP.net Microsoft SQL, Entity Framework JavaScript, CSS, JSON, XML, etc API Design & Best Practice (REST, SOAP) Excellent understanding of Object-Oriented software design Agile/SCRUM Azure DevOps Server Follow best practices to build ...

Business Analyst (Staffing & Integration)

Hiring Organisation
Randstad
Location
England, United Kingdom
data accuracy. Application Integration: Define integration requirements between various enterprise applications (e.g., VMS, ATS, CRM, Payroll, ERP, HRIS, reporting tools). Document data flows, API specifications, and transformation rules necessary for seamless data exchange. Collaborate with integration developers and architects to ensure successful implementation and testing of integrated solutions. … Solution Design & Testing: Participate in the design of technical solutions, ensuring alignment with business requirements and architectural standards. Develop test plans, test cases, and coordinate user acceptance testing (UAT) to validate solutions against business needs. Assist in defect identification, tracking, and resolution. Stakeholder Communication & Management: Serve ...

Engineering Team Lead

Hiring Organisation
Duffel
Location
City of London, London, United Kingdom
journey. Engineering at Duffel We're building tools to simplify travel distribution, search, and booking through one seamless API. The technical challenge? Design a beautiful API, then integrate it with hundreds of airlines - each with different systems and requirements - whilst delivering a fantastic developer experience. We work with … working with Elixir (previous experience not required—we value strong engineering fundamentals over specific languages) ✅ You have a high bar for code quality and API design ✅ You have opinions on good engineering standards and processes as we define ours at Duffel ✅ You think big picture - making tradeoffs between ...

Net/Azure Architect

Hiring Organisation
WeDoTech
Location
Remote work, Farringdon, Greater London, United Kingdom
Employment Type
Permanent
Salary
£85000 - £90000/annum
will be exclusively Microsoft focussed and expand their offering to encompass the Azure ecosystem. Tech:- C#/.Net Expert Azure - Platform and Software Architecture Design Patterns - HLD and LLD Messaging/Queueing - Service Bus Data Ingestion - NoSQL/Postgres API Design and Development - RESTFul Cloud agnostic mindset ...

Senior Full-Stack Web Developer

Hiring Organisation
Oscar Associates (UK) Limited
Location
United Kingdom
Employment Type
Permanent, Work From Home
Salary
£70,000
Terraform, GitHub CI/CD Role Overview Develop and maintain full-stack applications using Symfony and React Take ownership of new features, from design to deployment Collaborate closely with the wider team on code reviews and architectural discussions Contribute to technical improvements and continuous delivery practices Ensure high standards … experience with modern PHP frameworks such as Symfony or Laravel Strong front-end development experience with React or similar frameworks A good understanding of API design (REST or GraphQL) and relational databases Experience with Git-based workflows and CI/CD pipelines Excellent communication skills and the ability ...

Software Architect

Hiring Organisation
Uniting Ambition
Location
United Kingdom
Employment Type
Permanent
Salary
GBP Annual
High-Scale .NET Platform C#, .NET, Kafka, SQL, AWS, AI/ML, Event-Driven Systems Hybrid North West Are you ready to design and shape the core architecture of a platform built to support global scale , rapid growth, and long-term innovation? We are at the start … teams , and lead architectural decision-making while staying close enough to the code to guide best practice. What You ll Do Define the architecture, design principles, and technical roadmap for a highly scalable, distributed platform. Lead end-to-end solution design across event-driven , microservices , and cloud-native ...

Software Architect

Hiring Organisation
Uniting Ambition
Location
North West, United Kingdom
Employment Type
Permanent
High-Scale .NET Platform C#, .NET, Kafka, SQL, AWS, AI/ML, Event-Driven Systems Hybrid – North West Are you ready to design and shape the core architecture of a platform built to support global scale , rapid growth, and long-term innovation? We are at the start … teams , and lead architectural decision-making while staying close enough to the code to guide best practice. What You’ll Do Define the architecture, design principles, and technical roadmap for a highly scalable, distributed platform. Lead end-to-end solution design across event-driven , microservices , and cloud-native ...

.NET Developer

Hiring Organisation
SYSTEM C HEALTHCARE LIMITED
Location
Liverpool, Merseyside, North West, United Kingdom
Employment Type
Permanent
Salary
£35,000
squad, youll translate user needs into well-designed, well-tested services and APIs, collaborating closely with Product, QA, DevOps and DBAs. What youll do Design, develop and unit-test new features; improve and support existing modules Build and version RESTful APIs using C#/.NET with strong dependency injection …/CD pipelines and test automation with Azure DevOps/TeamCity/Octopus What youll bring Commercial experience in C# .NET and SQL, with API design and versioning know-how Familiarity with REST, dependency injection, JSON and git-based workflows Exposure to Azure (App Services, Functions, Service ...

Go Developer API - Technologist

Hiring Organisation
Client Server
Location
Cambridge, England, United Kingdom
Developer/Backend Software Engineer (Golang API) Cambridge/WFH to £80k Are you a backend focussed technologist looking for an opportunity to progress your career whilst working on complex and interesting systems with continual learning opportunities? You could be joining a market leading software house that's remote … access product is used by hundreds of millions of users worldwide. As a Go Developer you will design and develop new features and enhancements to the core remote access product as well as maintaining existing systems. You will be working with a modern microservices tech stack, using Go/ ...

SAP BTP Lead

Hiring Organisation
DXC
Location
City of London, London, United Kingdom
Employment Type
Permanent, Work From Home
Youll collaborate with business and technical teams to drive innovation, modernize architectures, and maximize value from SAPs cloud technologies. What Youll Do: Lead architecture, design, and implementation of solutions using SAP BTP services such as SAP Build, Integration Suite, Event Mesh, AI Core, and HANA Cloud. Define clean-core … Guide teams in building custom apps, workflows, automations, and side-by-side extensions using CAP/RAP and low-code tools. Own integration and API strategies leveraging BTP Integration Suite (APIs, OData, REST/SOAP, event-driven patterns). Provide technical leadership, mentoring developers and ensuring adherence to coding ...

Director, Enterprise Architecture & Engineering Acceleration

Hiring Organisation
BENTLEY SYSTEMS, INC
Location
Dublin, Ireland
Employment Type
Permanent
Salary
EUR 150,000 - 200,000 Annual
modern DevOps practices, including CI/CD pipelines, Infrastructure as Code (Terraform), and containerization (Docker, Kubernetes). Hands on experience with modern integration patterns (API design: REST, GraphQL; event driven architecture) and both relational (SQL Server, PostgreSQL) and NoSQL (Cosmos DB, MongoDB) databases. Experience applying AI/… insight into our global impact. About Bentley Systems Around the world, infrastructure professionals rely on software from Bentley Systems to help them design, build, and operate better and more resilient infrastructure for transportation, water, energy, cities, and more. Founded in 1984 by engineers for engineers, Bentley is the partner ...

Director, Enterprise Architecture & Engineering Acceleration

Hiring Organisation
BENTLEY SYSTEMS, INC
Location
Ireland
Employment Type
Permanent
Salary
EUR 150,000 - 200,000 Annual
modern DevOps practices, including CI/CD pipelines, Infrastructure as Code (Terraform), and containerization (Docker, Kubernetes). Hands on experience with modern integration patterns (API design: REST, GraphQL; event driven architecture) and both relational (SQL Server, PostgreSQL) and NoSQL (Cosmos DB, MongoDB) databases. Experience applying AI/… insight into our global impact. About Bentley Systems Around the world, infrastructure professionals rely on software from Bentley Systems to help them design, build, and operate better and more resilient infrastructure for transportation, water, energy, cities, and more. Founded in 1984 by engineers for engineers, Bentley is the partner ...

Software Engineer

Hiring Organisation
Reed
Location
Manchester, Lancashire, England, United Kingdom
Employment Type
Full-Time
Salary
£50,000 - £60,000 per annum, Inc benefits
Software Engineer Location: Manchester (Hybrid) Salary: £50,000 - £60,000 (Depending on experience) Tech stack: PHP 7/8, Laravel, RESTful API, MySQL, Vue or React The Opportunity We’re representing a leading retail organisation based in Manchester that is expanding its in-house engineering team due to sustained … . Hands-on experience with a modern PHP framework (Laravel preferred). Good understanding of relational databases (MySQL/PostgreSQL). Knowledge of RESTful API design and backend engineering. Experience with Git and CI/CD workflows. Core front-end understanding (HTML, CSS, JavaScript). Nice to Have ...

Platform Product Owner

Hiring Organisation
Wealthify
Location
Penarth, Wales, United Kingdom
mindset, with experience of managing the delivery of complex workstreams and identifying and managing dependencies across multiple teams and systems. Experience with microservices architecture, API design, and system-to-system integrations including API specifications and testing. Experience creating technical specifications, as-is and to-be process maps … technical detail - from high-level business context for non-technical stakeholders to detailed technical specifications for development teams. Proficiency with SQL and database design principles. Experience managing user stories, epics, and tasks in an Agile/Scrum environment using JIRA. Ability to break down complex technical requirements into detailed ...

Senior Backend Developer

Hiring Organisation
Oyster Consultants
Location
Manchester, Lancashire, England, United Kingdom
Employment Type
Full-Time
Salary
£60,000 - £80,000 per annum
technology choices, standards, and continuous improvement initiatives. Required Skills/Experience Strong C# development experience Experience with both .NET Core and .NET Web API Experience of building Microservices in .Net Core Experience using Message Based Architectures Experience using both SQL & NoSQL technologies Experience of API design Cloud ...

Senior Backend Developer

Hiring Organisation
Oyster Consultants
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£60,000 - £80,000 per annum
technology choices, standards, and continuous improvement initiatives. Required Skills/Experience Strong C# development experience Experience with both .NET Core and .NET Web API Experience of building Microservices in .Net Core Experience using Message Based Architectures Experience using both SQL & NoSQL technologies Experience of API design Cloud ...

Senior Backend Engineer

Hiring Organisation
THE IDOLS GROUP LIMITED
Location
London, United Kingdom
Employment Type
Permanent
systems problems. Skills and experience Strong expertise in Python and modern backend frameworks Deep knowledge of relational databases, particularly PostgreSQL Strong understanding of RESTful API design and microservices patterns Experience working with cloud platforms and containerised environments (Docker, Kubernetes) Experience with CI/CD pipelines, automated testing ...

Senior Software Engineer

Hiring Organisation
CPS Group (UK) Limited
Location
Cardiff, South Glamorgan, United Kingdom
Employment Type
Permanent
Salary
£55000 - £65000/annum
Java or a similar language is required, with the expectation that Java will feature more prominently at certain stages of development. Key Responsibilities Design, build, and maintain high-quality frontend applications using Angular Contribute to full-stack development across modern, scalable systems Collaborate with backend engineers on APIdesign and integration Work across the full software development lifecycle with a DevOps mindset Apply best practices including CI/CD, automated testing, and clean code principles Operate within an agile team, contributing to continuous improvement and technical decisions Ensure solutions meet security, performance, and quality standards Key Skills ...

(Senior) Full Stack Engineer

Hiring Organisation
BioTalent
Location
City of London, London, United Kingdom
with potential leadership options A high-autonomy role within a technically rigorous environment Your Responsibilities Own and evolve the React and Next.js application architecture Design and implement scalable UI patterns for complex workflows and data visualisation Define state management strategies for long-running jobs and asynchronous systems Build clean … years of experience building production React applications - React, Next.js, TypeScript Experience deploying and managing applications on AWS using Infrastructure as Code and containerized workflows API Design experience UX/UI & Design systems Experience with state management at scale (e.g. React Query, Zustand, Recoil) Knowledge of authentication, authorisation ...